EP0680058B1 - An inductive charging apparatus for use in charging a battery - Google Patents

An inductive charging apparatus for use in charging a battery Download PDF

Info

Publication number
EP0680058B1
EP0680058B1 EP95106449A EP95106449A EP0680058B1 EP 0680058 B1 EP0680058 B1 EP 0680058B1 EP 95106449 A EP95106449 A EP 95106449A EP 95106449 A EP95106449 A EP 95106449A EP 0680058 B1 EP0680058 B1 EP 0680058B1
Authority
EP
European Patent Office
Prior art keywords
magnetic core
magnetic
charge
charging apparatus
center posts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95106449A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0680058A2 (en
EP0680058A3 (en
Inventor
John T. Hall
William Quon
Herbert J. Tanzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DirecTV Group Inc
Original Assignee
Hughes Electronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hughes Electronics Corp filed Critical Hughes Electronics Corp
Publication of EP0680058A2 publication Critical patent/EP0680058A2/en
Publication of EP0680058A3 publication Critical patent/EP0680058A3/en
Application granted granted Critical
Publication of EP0680058B1 publication Critical patent/EP0680058B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B60L53/126—Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/34—Plug-like or socket-like devices specially adapted for contactless inductive charging of electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/22—Cooling by heat conduction through solid or powdered fillings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S336/00—Inductor devices
    • Y10S336/02—Separable

Definitions

  • the present invention relates to an inductive charging apparatus, and more particularly, to a composite core that controls the temperature of an inductively coupled charge port used to charge the propulsion batteries of electric vehicles.
  • the assignee of the present invention designs, develops and manufactures inductive charging systems for use in charging electric batteries of electric vehicles, and the like.
  • the charging system employs a charge port comprising secondary windings and core that form a secondary of a transformer installed in the electric vehicle, and a charge coupler or probe comprising a primary winding and a core that form a primary of a transformer that is coupled to a power source and which is inserted into the charge port to charge the vehicle batteries.
  • Charging of the batteries is done at high frequency and at high charging rates. Consequently, there is a great deal of heat buildup in the charge probe.
  • the probe must be removed from the charge port by a user once charging is completed, and the temperature of the probe is a concern.
  • the first approach is to rely on conduction of heat from the primary winding and core across an air gap interface to on-board heat exchangers having cooling air circulated by charge port fans. This approach works for systems operating from about 6 kw to 10 kw charging rates.
  • the second approach is to route chilled air from off-board refrigeration unit through the coupler. This approach works for systems operating at charge rates from about 20 kw to 25 kw.
  • the third approach is to use a plastic heat exchanger that does not interact with the magnetic fields produced by the charging system. However, this approach has poor thermal transfer characteristics.
  • the fourth approach is to use a metallic heat exchanger, that interacts with the magnetic field, resulting in a degree of proximity losses, depending on its location in the winding.
  • This apparatus has a charge probe that is insertable into a charge port that is coupled to the battery, wherein the charge port comprises a housing, an opening, into which the charge probe is inserted, an a secondary core surrounded by secondary windings, whereas the charge probe also comprises a housing and a primary magnetic core as well as a surrounding primary winding disposed in the housing of said charge probe.
  • Said charge probe of the known apparatus is connected via a cable to a stationary housing comprising electric and electronic circuitry cooling of which is effected by a fan.
  • the apparatus in accordance with the present invention comprises an improved inductive charge port for use in inductive battery charging apparatus used to charge a battery.
  • the apparatus comprises a charge probe that is insertable into a charge port that is coupled to the battery.
  • the charge probe comprises a housing, a primary magnetic core disposed in the housing, and a primary winding disposed around the primary magnetic core.
  • the secondary magnetic core is a composite magnetic core that embodies the principles of the present invention that provides for temperature control of the charge coupler.
  • the secondary magnetic core includes first and second magnetic core halves comprising high loss magnetic material that are disposed adjacent to each other.
  • the first and second magnetic core halves are generally rectangular and have C-shaped cross sections.
  • the first and second magnetic core halves contact each other at predetermined surfaces.
  • First and second magnetic center posts comprising low loss magnetic material abut the first and second magnetic core halves.
  • First and second thermal conducting members, or pins are disposed through the first and second magnetic core halves and center posts, respectively.
  • the thermal conducting members are coupled to external heat exchangers. A gap is formed between adjacent proximal ends of the thermal conducting members and the magnetic center posts.
  • First and second heat exchangers are thermally secured to peripheries of the first and second magnetic center posts, and adjacent surfaces thereof are separated from each other.
  • First and second insulators are disposed between the respective heat exchangers and magnetic core halves.
  • a magnetic core or "puck" comprising low loss magnetic material is disposed in the gap between the magnetic center posts and thermal conducting members.
  • a primary winding is disposed around the magnetic core.
  • the present invention provides for a composite magnetic core that thermally controls the temperature of the magnetic core or puck at the center of the inductively coupled charge probe.
  • the present invention minimizes the temperature of the magnetic core, while allowing greater power dissipation and temperature control of the secondary magnetic core.
  • the present invention permits the design of a very high power density, high power, high frequency inductively coupled transformer.
  • the primary magnetic core in the probe is cooled to between touch temperatures of 60° to 70°C. This requires that the heat loss from the secondary magnetic core and the cooling of the primary magnetic core must be adequate to reach this temperature. This problem has been previously solved by using very expensive low loss ferrite core material coupled with air or water cooling.
  • the present invention greatly minimizes this problem by applying "localized dissipation and thermal control" to the secondary magnetic core. This is achieved by using a very low loss ferrite material for the thermal conducting members and ferrite core in the probe, and using a high loss ferrite material for the remaining portions of the magnetic core.
  • the thermal conducting members are thermally bonded to an air heat exchanger.
  • the thermal conducting members are inserted into a hole through the magnetic core halves and center posts.
  • the hole is filled with a thermally conductive material that conducts heat to the heat exchanger.
  • the heat of the thermal conducting members are minimized by conducting the heat away from the outer surface and inside surface of the probe. Heat dissipation in the ferrite core is minimized due to the use of low loss ferrite material, and is maintained at approximately the temperature of the magnetic center posts.
  • the present invention may be used in inductive battery charging apparatus employed for rapid, high rate charging of propulsion batteries of electric vehicles.
  • the present invention is adapted for use with an inductive charge probe to which, during charging, is inserted into the port on board an electric vehicle.
  • the present invention may be used in any transformer design but is specifically designed for use with inductive coupled transformer ports for charging the propulsion batteries of electric vehicles.
  • the thermal limitations are particularly bad for electric vehicle induction coupled battery charging apparatus, such as where the inductive charge probe is designed to be physically inserted into a secondary charge port disposed in the electric vehicle, since good thermal contact between the primary and secondary transformer cores is hard to achieve.
  • Fig. 1 is a partial cross sectional view of inductive battery charging apparatus 10 employing an inductive charge probe 20.
  • the inductive charge probe 20 is inserted into a charge port 11 disposed in an electric vehicle 17, when it is used to charge a propulsion battery 16 of the electric vehicle 17.
  • the charge port 11 includes a housing 12 having an opening 13 into which the inductive charge probe 20 is inserted.
  • the charge port 11 comprises two secondary core halves 14 and two sets of secondary windings 15 surrounding the core halves 14. The sets of secondary windings 15 are coupled to the battery 16 of the electric vehicle 17.
  • the charge probe 20 is designed to be inserted into the opening 13 of the charge port 11 in order to couple power to the battery 15 from an external power source 27.
  • the inductive charge probe 20 is generally comprised of a plastic coupler housing 22 that has two mating coupler halves 22a, 22b that are configured to provide a handle 23.
  • the inductive charge coupler 20 is comprised of a primary magnetic core 24 or "puck" 24, that is made of ferrite, for example.
  • a primary winding 25 is disposed around the primary magnetic core 24.
  • the mating halves 22a, 22b of the inductive charge probe 20 enclose the primary winding 25 and the primary magnetic core 24.
  • the primary winding 25 is coupled by way of a power cable 26 to the external power source 27 for coupling power to the charge probe 20.
  • Fig. 2 is an enlarged cross sectional view of a composite secondary magnetic core in accordance with the principles of the present invention that may be employed in the inductive charge port 11.
  • the seondary magnetic core includes first and second magnetic core halves 31 comprising a high loss magnetic material that are disposed adjacent to each other and that contact each other at predetermined surfaces.
  • the first and second magnetic core halves 31 are generally rectangular and have C-shaped cross sections.
  • First and second thermal conducting members 32 are disposed through the first and second magnetic core halves 31 and a gap 38 is formed between adjacent proximal ends thereof.
  • First and second magnetic center posts 33 comprising low loss magnetic material abut adjacent proximal inside surfaces of the first and second magnetic core halves 31.
  • the first and second thermal conducting members 32 are respectively disposed through holes 39 in the magnetic core halves 31 and the magnetic center posts 33. Adjacent ends of the first and second magnetic center posts 33 are separated from each other by the gap 38. The first and second thermal conducting members 32 are secured in the holes 39 using thermally conductive bonding material.
  • First and second heat exchangers 34 are secured to peripheries of the first and second magnetic center posts 33 using thermally conductive bonding material 35, and adjacent surfaces thereof are separated from each other.
  • the heat exchangers 34 are generally circular and extend beyond the edges of the magnetic core halves 31.
  • First and second insulators 36 are disposed between the heat exchangers 34 and the respective magnetic core halves 31.
  • the primary magnetic core 24 comprising low loss magnetic (ferrite) material is disposed between the magnetic center posts 33 and the thermal conducting members 32.
  • the magnetic core 24 has substantially the same cross sectional shape as the first and second magnetic center posts 33.
  • the primary winding 25 is disposed around the magnetic core 24.
  • the present invention provides for a composite secondary magnetic core that thermally controls the temperature of the magnetic core 24 in the inductively coupled charge probe 20.
  • the present invention minimizes the temperature of the magnetic core 24 while allowing greater power dissipation and temperature control of the secondary magnetic core.
  • the present invention permits the design of very high power density, high power, high frequency probes 20 for inductively coupled battery charging apparatus 10.
  • the magnetic core 24 that is embedded in the probe 20 is cooled to between touch temperatures of 60° to 70°C. This requires that the heat loss in the magnetic core, and the cooling thereof must be adequate to reach this temperature.
  • the present invention uses "localized dissipation and thermal control" to provide this temperature control of the probe 20.
  • This temperature control is achieved by using very low loss ferrite material for the thermal conducting members 32 and magnetic core 24 in the probe 20, and using a high loss ferrite material for the remaining portions of the secondary magnetic core 24.
  • the thermal conducting members 32 are thermally bonded to the air heat exchangers 34.
  • the thermal conducting members 32 are inserted into the hole 39 through the magnetic core halves 31 and center posts 33.
  • the hole 29 is filled with a thermally conductive material that conducts heat to the heat exchanger 34.
  • the posts may be thermally bonded to the air heat exchangers 34 in a manner disclosed in the above-cited U.S. Patent Application Serial No.
  • the present invention may be used in inductive battery charging apparatus employed for rapid, high rate charging of propulsion batteries of electric vehicles.
  • the present invention is adapted for use with an inductive charge coupler which, during charging, is inserted into the port on board an electric vehicle.
  • the present invention may be used in any transformer design but is specifically designed for use with inductive coupled transformer probes for charging the propulsion batteries of electric vehicles.
  • the thermal limitations are particularly bad for electric vehicle induction coupled battery charging apparatus, such as where the inductive charge coupler is designed to be physically inserted into a secondary charge port disposed in the electric vehicle, since good thermal contact between the primary and secondary transformer cores is hard to achieve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Transformer Cooling (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
EP95106449A 1994-04-29 1995-04-28 An inductive charging apparatus for use in charging a battery Expired - Lifetime EP0680058B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US237495 1994-04-29
US08/237,495 US5483143A (en) 1994-04-29 1994-04-29 Composite core designed for inductive coupled transformer probes

Publications (3)

Publication Number Publication Date
EP0680058A2 EP0680058A2 (en) 1995-11-02
EP0680058A3 EP0680058A3 (en) 1996-03-13
EP0680058B1 true EP0680058B1 (en) 1999-03-03

Family

ID=22893963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95106449A Expired - Lifetime EP0680058B1 (en) 1994-04-29 1995-04-28 An inductive charging apparatus for use in charging a battery

Country Status (7)

Country Link
US (1) US5483143A (ja)
EP (1) EP0680058B1 (ja)
JP (1) JP2659038B2 (ja)
KR (1) KR0184331B1 (ja)
DE (1) DE69507981T2 (ja)
ES (1) ES2129697T3 (ja)
TW (1) TW343017U (ja)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5594317A (en) * 1994-12-02 1997-01-14 Delco Electronics Corp. Inductive charger field shaping using nonmagnetic metallic conductors
EP0823767A1 (en) * 1996-08-07 1998-02-11 SUMITOMO WIRING SYSTEMS, Ltd. Charging system for electric vehicle
JP3459556B2 (ja) * 1998-01-16 2003-10-20 株式会社豊田自動織機 非接触型充電装置
JPH11238638A (ja) * 1998-02-23 1999-08-31 Toyota Autom Loom Works Ltd 非接触型充電装置
JP2001167954A (ja) * 1999-12-06 2001-06-22 Toyota Autom Loom Works Ltd 充電用受電側カプラ及び電磁誘導式受電側充電装置
FR2916298B1 (fr) * 2007-05-16 2009-08-21 Converteam Sas Soc Par Actions Refroidissement du noyau magnetique d'une bobine d'induction
TWI546828B (zh) 2008-02-22 2016-08-21 通路實業集團國際公司 感應式耦合磁定位系統
US8841881B2 (en) 2010-06-02 2014-09-23 Bryan Marc Failing Energy transfer with vehicles
DE102012213263A1 (de) * 2011-09-20 2013-03-21 Robert Bosch Gmbh Handwerkzeugvorrichtung mit zumindest einer Ladespule
US9796280B2 (en) 2012-03-23 2017-10-24 Hevo Inc. Systems and mobile application for electric wireless charging stations
EP2797090A1 (en) * 2013-04-25 2014-10-29 Magnetic Components Sweden AB Thermal management system for SMC inductors
DE102013217728A1 (de) * 2013-09-05 2015-03-05 Siemens Aktiengesellschaft Spulenanordnung
US20160190860A1 (en) * 2014-12-31 2016-06-30 Joseph A. Swift Charging apparatus and methodology
US10700317B2 (en) 2015-04-13 2020-06-30 Cps Technology Holdings, Llc Cell to heat sink thermal adhesive
US10369894B2 (en) 2016-10-21 2019-08-06 Hevo, Inc. Parking alignment sequence for wirelessly charging an electric vehicle
US10128697B1 (en) 2017-05-01 2018-11-13 Hevo, Inc. Detecting and deterring foreign objects and living objects at wireless charging stations

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5341083A (en) * 1991-09-27 1994-08-23 Electric Power Research Institute, Inc. Contactless battery charging system
EP0552737A1 (en) * 1992-01-22 1993-07-28 Hughes Aircraft Company Weatherized curb-side charger
US5412304A (en) * 1993-08-09 1995-05-02 Hughes Aircraft Company Cooled primary of automobile battery charging transformer
US5434493A (en) * 1993-10-25 1995-07-18 Hughes Aircraft Company Fixed core inductive charger
US5408209A (en) * 1993-11-02 1995-04-18 Hughes Aircraft Company Cooled secondary coils of electric automobile charging transformer

Also Published As

Publication number Publication date
EP0680058A2 (en) 1995-11-02
US5483143A (en) 1996-01-09
KR0184331B1 (ko) 1999-05-15
TW343017U (en) 1998-10-11
JP2659038B2 (ja) 1997-09-30
ES2129697T3 (es) 1999-06-16
KR950030432A (ko) 1995-11-24
DE69507981T2 (de) 1999-07-08
DE69507981D1 (de) 1999-04-08
EP0680058A3 (en) 1996-03-13
JPH0855743A (ja) 1996-02-27

Similar Documents

Publication Publication Date Title
EP0680058B1 (en) An inductive charging apparatus for use in charging a battery
EP0821376B1 (en) Oil cooled high power inductive coupler
EP0680059B1 (en) Air/liquid cooled metallic turn for high frequency high power charging transformers
US6396241B1 (en) Inductive charging system employing a fluid-cooled transformer coil and transmission cable
EP0651405B1 (en) Cooled secondary of electric automobile charging transformer
US5909099A (en) Electric vehicle charging system including refrigerant system
JP3253592B2 (ja) 送電側カプラ
MXPA97005597A (en) High power cooling inductive coupler conace
AU5407294A (en) Contactless battery charging system
Severns et al. An ultra-compact transformer for a 100 W to 120 kW inductive coupler for electric vehicle battery charging
CN108091474A (zh) 线圈单元
EP0820073B1 (en) Inductive coupler assembly and having its primary winding formed in a printed wiring board
EP0680055A1 (en) High frequency transformer having an internally liquid cooled winding
JPH08316069A (ja) 非磁性金属導体を使用した誘導型充電器による磁場成形
US5463303A (en) Multilayer separate windings of inductive charge coupler for automobile battery charging transformer
KR102486366B1 (ko) 파워 일렉트로닉스 시스템용 컴팩트형 자력 유닛
KR0142376B1 (ko) 전기 자동차 충전 변압기의 내부 냉각 구조
JPS59169092A (ja) 高周波誘導加熱コイル装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE CH DE DK ES FR GB GR IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE CH DE DK ES FR GB GR IT LI NL SE

17P Request for examination filed

Effective date: 19960912

17Q First examination report despatched

Effective date: 19961204

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HE HOLDINGS, INC.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HUGHES ELECTRONICS CORPORATION

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE DK ES FR GB GR IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990303

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990303

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990303

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990303

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990303

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69507981

Country of ref document: DE

Date of ref document: 19990408

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990603

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2129697

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20001031

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011101

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20011101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050428

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20110518

Year of fee payment: 17

Ref country code: FR

Payment date: 20110426

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20110427

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120502

Year of fee payment: 18

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120428

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20121228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120428

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120430

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20130715

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131101

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69507981

Country of ref document: DE

Effective date: 20131101